Theoretical gamma-ray astrophysics research conducted in the Laboratory for High-Energy Astrophysics concerns astrophysical processes that produce emission at gamma-ray energies. This research attempts to answer fundamental questions such as the origin, structure, and evolution of the Universe; the nature of compact objects; the origin of the cosmic rays; and the structure and evolution of the galaxy. Research is performed on gamma-ray line and continuum production mechanisms, on physical processes in strong magnetic fields, on the physics of electron-positron pair plasmas, and on radiation transfer in the gamma-ray regime. These physical processes are applied to models of compact sources, including active galactic nuclei, the galactic center, galactic gamma-ray sources, pulsars, and gamma-ray bursters. They are also applied to diffuse sources of gamma-rays, including the galaxy and young supernova remnants. Gamma-ray tests for the nature of dark matter are also proposed. Applicants are encouraged to participate in the above research or to initiate related projects. Gamma-ray tests of special relativity, as well as tests of proposed quantum gravity effects on high energy gamma-ray processes are also explored.

Location:
Goddard Space Flight Center
Greenbelt, Maryland
Field of Science:Astrophysics
Advisors:
Tonia Venters
tonia.m.venters@nasa.gov
301-614-5546
Demosthenes Kazanas
Demos.Kazanas-1@nasa.gov
301-286-7680
Zaven Arzoumanian
zaven.arzoumanian-1@nasa.gov
(301) 286-2547

Tyler M. Parsotan
tyler.parsotan@nasa.gov
301-286-4678

Applications with citizens from Designated Countries will not be accepted at this time, unless they are Legal Permanent Residents of the United States. A complete list of Designated Countries can be found at: https://www.nasa.gov/oiir/export-control.

Eligibility is currently open to:

• U.S. Citizens;
• U.S. Lawful Permanent Residents (LPR);
• Foreign Nationals eligible for an Exchange Visitor J-1 visa status; and,
• Applicants for LPR, asylees, or refugees in the U.S. at the time of application with 1) a valid EAD card and 2) I-485 or I-589 forms in pending status